public function generateAjax($strFolder, $strField, $level, $mount = false)
{
if (!\Environment::get('isAjaxRequest')) {
return '';
}
$this->strField = $strField;
$this->loadDataContainer($this->strTable);
// Load the current values
switch ($GLOBALS['TL_DCA'][$this->strTable]['config']['dataContainer']) {
case 'File':
if (\Config::get($this->strField) != '') {
$this->varValue = \Config::get($this->strField);
}
break;
case 'Table':
$this->import('Database');
if (!$this->Database->fieldExists($this->strField, $this->strTable)) {
break;
}
$objField = $this->Database->prepare("SELECT " . $this->strField . " FROM " . $this->strTable . " WHERE id=?")->limit(1)->execute($this->strId);
if ($objField->numRows) {
$this->varValue = \StringUtil::deserialize($objField->{$this->strField});
}
break;
}
$this->convertValuesToPaths();
if ($this->extensions != '') {
$this->arrValidFileTypes = \StringUtil::trimsplit(',', $this->extensions);
}
return $this->renderFiletree(TL_ROOT . '/' . $strFolder, $level * 20, $mount, $this->isProtectedPath($strFolder));
}